<div class="container" >
<div class="jumbotron" [ngStyle]="{'background': imgurl}" *ngIf="false">
        <h1>Jumbotron</h1>
        <p>This is a simple hero unit, a simple jumbotron-style component for calling extra attention to featured content or information.</p>
        <p><a class="btn btn-primary btn-lg">Learn more</a></p>
    </div>
      <div id="myCarousel" class="carousel slide">
          <!-- 轮播（Carousel）指标 -->
          <ol class="carousel-indicators">
              <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
              <li data-target="#myCarousel" data-slide-to="1"></li>
              <li data-target="#myCarousel" data-slide-to="2"></li>
          </ol>   
          <!-- 轮播（Carousel）项目 -->
          <div class="carousel-inner">
              <div class="item active">
                  <img src="../assets/Tuscany, Ital.jpg" style="height: 250px;width: 600px;">
              </div>
              <div class="item">
                  <img src="../../../assets/logo.png" style="height: 250px;width: 600px;">
              </div>
              <div class="item">
                  <img src="../assets/Tuscany, Ital.jpg" style="height: 250px;width: 600px;">
              </div>
          </div>
          <!-- 轮播（Carousel）导航 -->
          <a class="carousel-control left" href="#myCarousel" 
             data-slide="prev"> </a>
          <a class="carousel-control right" href="#myCarousel" 
             data-slide="next"></a>
      </div>
    </div>